Form 8903 Line 25 definitely not flowing right to Schedule 1 as it is supposed to be part of line 36 according to 8903 instructions.  Of course, I believe the only DPAD allowed anymore is for pass-thru from cooperatives, but I have a lot of those.  Lacerte has this deduction as a direct flow thru to Line 10 of Form 1040 taxable income.  Not sure if that wud exactly wreak havoc, but definitely seems non-advisable.